Question about 2001 Volvo V70

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Wet carpet under front Passenger seat

The Heater pipe/hose under the front Passenger seat leaks water and the carpet is perpetually wet.
i have been told this could be a blocked vent line of the AC. where the condensating mosture from the condenser has to get out soemwhere, it backs up and exits down the heater pipe under the front seat.
It is not related to weather, i.e rain getting in through the pipe,I run the AC most of the time and have stuck a towl under the hose to absorb the water, and it is soaked after a couple of days.
It is only the passenger side.
There are no holes (rust) in the floor, it is definately coming out the pipe.....
Any ideas?


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  • Anonymous Mar 25, 2014

    with the heater/defroster on i get water leaking down from the front cowell to the passenger front seat floor.


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You have drain blockage in the condesor case itself. There is a small tube that will drain the condensor case, the big black plastic case that contains most of your a/c system inside the car. This case collects moisture and that must drain normally from the case drain to the outside of your car onto the ground.. If this drain is plugged, you will have leakage on to the floor. If the moisture is allowed to remain in the carpet, mildew will set in and then you will have to replace the carpet.

Posted on Nov 19, 2008

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Is it clean clear water with no oder or coolant....greenish yellowish.....if its clean and clear get the drain cleaned out , if you park under a tree it ight be plugged with tree leaves etc... if its greenish your heater core is leaking.either way you need your local tech for this

Posted on Nov 19, 2008

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adobe.gif Printable View (70 KB) TSB
Publication Date: January 17, 2006
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